WSL3921 and WSL5931 Vishay Dale Power Metal Strip® Resistors, Low Value (down to 0.0002 Ω), Surface Mount FEATURES • Ideal for all types of current sensing, voltage division and pulse applications including switching and linear power supplies, instruments, power amplifiers RoHS COMPLIANT • Proprietary processing technique produces extremely low resistance values, down to 0.0002 Ω • All welded construction • Solid metal Iron-Chrome or Manganese-Copper alloy resistive element with low TCR (< 20 ppm/°C) • Very low inductance 0.5 nH to 5 nH • Excellent frequency response to 50 MHz • Low thermal EMF (< 3 µV/°C) • 100 % lead (Pb)-free and RoHS compliant STANDARD ELECTRICAL SPECIFICATIONS GLOBAL MODEL POWER RATING P70 °C W TOLERANCE % RESISTANCE VALUES AVAILABLE mΩ WEIGHT (typical) g/1000 pieces WSL3921 3.0 1.0 and 5.0 0.3, 0.5, 1, 2, 3, 4 281 WSL5931 5.0 1.0 and 5.0 0.2, 0.3, 0.5, 1, 2, 3 398 Note • Part Marking: no part marking on these parts TECHNICAL SPECIFICATIONS PARAMETER UNIT WSL RESISTOR CHARACTERISTICS ppm/°C ± 225 for 0.2 mΩ, ± 175 for 0.3 mΩ and 0.5 mΩ, ± 75 for 1 mΩ to 4 mΩ Operating Temperature Range °C - 65 to + 170 Maximum Working Voltage V (P x R)1/2 Temperature Coefficient GLOBAL PART NUMBER INFORMATION GLOBAL PART NUMBERING: WSL3921L5000FEA W GLOBAL MODEL WSL3921 WSL5931 www.vishay.com 16 S L 3 9 2 RESISTANCE VALUE L = mΩ L5000 = 0.0005 Ω 1 L 5 0 TOLERANCE CODE F = ± 1.0 % J = ± 5.0 % 0 0 F E A PACKAGING CODE EA = Lead (Pb)-free, tape/reel EK = Lead (Pb)-free, bulk For technical questions, contact: [email protected] SPECIAL (Dash Number) (up to 2 digits) From 1 - 99 as applicable Document Number: 30110 Revision: 29-Mar-07 WSL3921 and WSL5931 Power Metal Strip® Resistors, Low Value (down to 0.0002 Ω), Surface Mount Vishay Dale DIMENSIONS DIMENSIONS in inches [millimeters] MODEL H D L WSL3921 W WSL5931 L W H T 0.394 ± 0.010 0.591 ± 0.010 0.205 ± 0.010 [5.20 ± 0.254] 0.305 ± 0.010 [7.75 ± 0.254] 0.020 [0.5] 0.020 [0.5] 0.080 ± 0.010 [2.00 ± 0.254] 0.157 ± 0.010 [4.00 ± 0.254] T MODEL d b l 0.106 ± 0.010 [2.70 ± 0.254] 0.205 ± 0.010 [5.20 ± 0.254] 0.244 ± 0.010 [6.20 ± 0.254] 0.344 ± 0.010 [8.75 ± 0.254] 0.220 ± 0.005 [5.60 ± 0.13] 0.220 ± 0.005 [5.60 ± 0.13] GLOBAL MODEL RESISTANCE VALUE “D” THICKNESS ELEMENT MATERIAL WSL3921 WSL3921 WSL3921 WSL3921 WSL3921 WSL3921 WSL5931 WSL5931 WSL5931 WSL5931 WSL5931 WSL5931 0.3 0.5 1.0 2.0 3.0 4.0 0.2 0.3 0.5 1.0 2.0 3.0 0.0510 0.0300 0.0150 0.0270 0.0170 0.0130 0.0485 0.0300 0.0180 0.0330 0.0155 0.0105 Mn-Cu Mn-Cu Mn-Cu Fe-Cr Fe-Cr Fe-Cr Mn-Cu Mn-Cu Mn-Cu Fe-Cr Fe-Cr Fe-Cr WSL3921 I b SOLDER PAD DIMENSIONS in inches [millimeters] WSL5931 Rated Power in % d 120 100 80 60 40 20 0 - 65 - 50 - 25 0 25 50 Derating 75 70 100 125 150 175 Ambient Temperature in °C PERFORMANCE TEST CONDITIONS OF TEST Thermal Shock TEST LIMITS ± (1.0 % + 0.0005 Ω) ΔR - 55 °C to + 150 °C, 1000 cycles, 15 min at each extreme Short Time Overload 5 x rated power for 5 s ± (0.5 % + 0.0005 Ω) ΔR Low Temperature Storage - 65 °C for 45 min ± (0.5 % + 0.0005 Ω) ΔR High Temperature Exposure 1000 h at + 175 °C ± (1.0 % + 0.0005 Ω) ΔR Bias Humidity + 85 °C, 85 % RH, 10 % Bias, 1000 h ± (0.5 % + 0.0005 Ω) ΔR Mechanical Shock 100 g’s for 6 ms, 5 pulses ± (0.5 % + 0.0005 Ω) ΔR Vibration Frequency varied 10 to 2000 Hz in 1 min, 3 directions, 12 h ± (0.5 % + 0.0005 Ω) ΔR Load Life 1000 h at + 70 °C, 1.5 h “ON”, 0.5 h “OFF” ± (1.0 % + 0.0005 Ω) ΔR Resistance to Solder Heat + 260 °C Solder, 10 - 12 s dwell, 25 mm/s emergence ± (0.5 % + 0.0005 Ω) ΔR Moisture Resistance MIL-STD-202, Method 106, 0 % power, 7a and 7b not required ± (0.5 % + 0.0005 Ω) ΔR PACKAGING MODEL REEL TAPE WIDTH DIAMETER PIECES/REEL CODE WSL3921 16 mm/Embossed Plastic 330 mm/13" 3000 EA WSL5931 16 mm/Embossed Plastic 330 mm/13" 1500 EA Note • Embossed carrier tape per EIA-481-1A Document Number: 30110 Revision: 29-Mar-07 For technical questions, contact: [email protected] www.vishay.com 17 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1